This is how the customary system goes- we have to memorize it for the test.

Length:
12 in. = 1 ft.
3 ft. = 1 yd.
36 in. = 1 yd.
5,280 ft. = 1 mi.

Weight:
16 oz = 1 lb.
2,000 lbs. = 1 t.

Capacity:
8 fl. oz. = 1 c.
2 c = 1 pt.
4 c = 1 qt.
2 pt = 1 qt
4 qt = 1 gal


If you can add anything else, that would be great. You can also find the list of customary conversions in the math book (as you already know). - Chili09 Chili09 Mar 18, 2009